1996 Buick LeSabre Owner's Manual - Page 113
1996 Buick LeSabre Manual
Page 113 highlights
Voltage Indicator (Option) Brake System Warning Light Your Buick's hydraulic brake system is divided into two still parts. If one part isn't working,the other part can work and stop you. For good braking, though, you need both parts working well, I l l If you have the optional gage cluster, this gage shows voltage in the electrical system. If the warning light comes on, there could be a brake problem. Have your brake system inspected right away. This light should come on when you turn the ignition key to START. If it doesn't come on then, have it fixed so it will be ready to warn you if there's a problem. The normal range is 11 to 15 volts. If the gage reading staysin either red range, orthe battery warning light comes one, have your Buick dealer check the electrical system. BRAKE () a If the light and chime come on while you are driving, pull off the road and stop carefully. You may notice that the pedal is harder to push. Or, the pedal may go closer to the floor. It may take longer to stop. If the light is still on, have the vehicle towed for service. (See"Towing Your Vehicle" in the Index.)